Gael kellner



(No Model.)

0. KBLLNER. MACHINE FOR REDUCING PAPER STOCK. No. 489,079.

Patented Jan. 3, 1893.

tion'. This. invention has relation to apparatus for rials for themanufacture of paper, such as UNITED STATES PATENT OFFICE.

CARL KELLNER, or VIENNA, AUSTRIA-HUNGARY.

MACHINE-FOR aeouome PAPER-STOCK.

SBEGIFIGATION forming part of Letters Patent No. 489,079, dated January3, 1893.

Application filed April 18, 1892.

Fibers for the Manufacture of. Paper; and I- do hereby declare thefollowing to be a'full, clear, and exact description vof the invention,such as will enable others skilled in the'artto whichit appertainstomake and use the same, reference being had to the accompanying drawings,and to letters of reference marked thereon, which forth a par't'of thisspecificapreparing fibrous materials, such as wood or other fibrousmaterials, for the manufacture of paper.

The apparatuses -o rmachines heretofore employed in the preparation offibrous matethe well known rag engine orstuff cylinders or enginespresent structural defects that seriously aflec't the product or pulp;not only'is the separation of'the 'fibers from one-another not ascomplete as may be desired, but the fibers are more or less torn, whilein the case of wood fiber the hard resinous bodies such as knots thatremain unaffected by the disintegrating liquors, are groundupsufliciently fine to pass with the cellulose through the vstrainersand tend to materially impair .the

purity as well as the color of the pulp.

The object of this invention is to obviate,

these disadvantages by the provision of means whereby'the separation ofthe individual fibers from one another is more effectually an tained,and whereby the grinding up or-disthe product after leaving the machinebeing like cotton and very easily felted.

To these ends the invention consists in the construction and arrangementof .the opera.

tive mechanism, as, will now be fully described, reference being had tothe accompanying drawings, in which- 1 v Figure 1 is a-longitudinalsectional elevation; Fig. 2, a transverse section on. line srw of Fig.1, and Fig. 3, a sectional top plan Serial Notaars. QTo'model.)

view of a machine of, the class described, em-

ence being employed to indicate like parts wherever such may occur.

arator shell of a more or less ellipsoidal form in cross section, thesides of theellipse be g flattened so as to cause the ends of the beaterarms or blades to revolve in eloseproximity to the inner surfaces oftheshell, which is made tapering, its 'cr 'ss sectional area beinggradually reduced fr m the discharge to the feed end. t

,The separator shell is supported onsuitable end standards, 0, c, inwhich are formed the such beater arms being preferably formed onabearing or sleeve mounted on the shafts.

shaft, 1), as to work between the teeth or each other,,sufiicient spacebeing left between ies to pass without being ground up. The heaters orblades (1 d are made longer as they approach the discharge end of theshell so as .tdconform to the cross-sectional area there- 'of; and-asthe material, being treated, nears the discharge and the fibers becomemore and more separated from one another, I increase the number ofheaters or blades on the shafts tion andto thoroughly mix the fibrousmaterial with the water fed int o'the'cylinder, at

said discharge end and to facilitate and ex- .pedite the discharge ofthe fibrous material.

The shafts are revolved toward each other either by suitable gearing,or'as shown, by means of a'driving pulley, f, f, respectively, mountedon the opposite outer ends of said shaft's,-b, and b. By reason of themore or less conical form of the separator shell, a, its

- inner lower face or bottom inclines more or less from the feed to thedischarge end, where- I by the material is automatically caused to movetoward ,or to said, discharge end-irrespective of the pressure exertedby the mate- L of the materialfroin the separator shell probodying myinvention; like letters of refer-.

The heaters or blades,- (1, are so arranged on.

them, to allow the knots or hard resinous bod-j (as shown in Fig. 1) tocomplete the separaer g. Iii order to further facilitate the discharge:

' In the above drawings, a, indicates the sepbearings for two shafts, b,and b, armed with heaters or blades, d, and d';respeptively,fou rblades, (1', on shaft,b.', but not in contact with rial fed to theseparator through feed hop" bodies, while the vide a pipe, h, at thedischarge end through which water is introduced into the shell so as tothin out the fibrous material and cause it to readily flow through thedischarge pipe, is, Fig. 1.

in practice the cellulose is fed to=the separator in the form 'of a.thick s'emidry paste, the water having been first drained off, and thetwo shafts are rapidly revolved in opposite dirccti0ns,the'beatersacting on the fibers t0 effectually separate the same from one anotherand from the knotsor hard resinous latter pass freelyv between thebeater arms without being crushed or ground up, so.--'that they can bereadily re moved bystraining the pulp in the usual man'- ner afterleaving the machine. v

Having thus described my inventidl), what I claim as new by LettersPatent is:-

therein and desire to secure In a machine of the class describedftjhecombination with the shell or casing made to I diametrically oppositeeach other, of the shafts Z and 2 each provided with sets of beater'armsincreasing in lengthand number toward said discharge end, the beaterarms on one shaft working between those on the other shaft, and meansfor revolving said shafts toward-each other, substantially as and forthe purpose set forth. I

In testimony wh ereof I affix my signature in presence'of two witnesses.Y 1 V CARL KELLNER. VVitne'ss'es: v

J ULIUS GoLDsoHM'mr, A. SOHLESSlNG.

